[antlr-interest] [bug?] Unrecognized escape sequence in Lexer .cs code(3.1b1 C# Target)
Петров Александр
gmdidro at gmail.com
Wed May 28 10:03:16 PDT 2008
Hello,
the Lexer code generated in accordance to the following grammar gets
the many errors "LPMEDLexer.cs(510,11): error CS1009: Unrecognized
escape sequence".
It seems to me, that when ANTLR generates a code for DFA, it doesn't
use "@" for format-string representation:
LPMEDLexer.cs
line: 510
"\3\uffff\2\10\4\uffff\4\10\1\17\1\10\1\uffff\1\21\1\uffff";
it should be
@"\3\uffff\2\10\4\uffff\4\10\1\17\1\10\1\uffff\1\21\1\uffff";
I also have such errors in Parser and Tree Parser code, but can't
reproduce it with a small grammar.
Is it a bug ?
----------------------------------------------------------------------------------------------------------------------
grammar LPMED;
options{ language = CSharp; }
tokens{ CINT; CBOOL; }
program : atom '.' ;
atom
options
{
backtrack=true;
} : dMFID
| INT //-> ^(CINT INT)
| dBOOL //-> ^(CBOOL dBOOL)
;
dMFID : ',' atom | ID;
dBOOL :
'true'
|'false'
;
INT : ('0'..'9')+ ;
WS : ( ' '
| '\t'
| '\r'
| '\n'
)+
{ $channel=HIDDEN; }
;
fragment NEWLINE
: '\r'|'\n'
;
LINECOMMENT
: '//' ~('\r'|'\n')* NEWLINE {$channel=HIDDEN;}
;
ID : ('a'..'z' | 'A'..'Z' | '_') ('a'..'z' | 'A'..'Z' | '0'..'9' | '_')*;
----------------------------------------------------------------------------------------------------------------------
//ANTLR Parser Generator Version 3.1b1 (May 20, 2008) 1989-2008
//LPMEDLexer.cs(510,11): error CS1009: Unrecognized escape sequence
Thank you
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